I mentioned in a post last month (which I've deleted, in favor of this one) several new signs reflecting the recent I-695 designation for parts of the 11th Street Bridge and the Southeast Freeway. Since then, I went back to take some pictures, as well as nail down information on exit numbering.
All photos were taken July 5, 2014. I'm not expecting additional signage changes, except on a still-being-rebuilt segment of I-695, and hopefully to fix some "what the food were they thinking?!" exit numbers on I-395.

The first of the new signs on I-395 eastbound, at the Potomac Park exit (exit 2), shows three exits you can use to reach Nationals Park, and that two of them are from I-695.

The corresponding sign on DC 295 shows two exits for National Park, from different freeways (one you go straight onto I-295, the other you take I-695).

Back to eastbound I-395, this sign at the 12th Street NW exit (exit 3) shows the next three upcoming exits, and that one of them is a left exit onto I-695.

The sign on the left, on the 7th Street NW overpass, has been changed to eliminate one confusion but add another. The sign used to incorrectly direct traffic heading to the south (House of Representatives) side of Capitol Hill to stay in the #2 lane, rather than the #4 lane as the next set of signs correctly shows. Now the sign tells House-bound traffic to just use I-395. I wish they'd move the sign to the right over the #3 lane, next to the sign over the #4 lane for the exit to continue on I-395 through the Third Street Tunnel, but at least the new sign steers all Capitol Hill-bound traffic into the right lanes.
However, the new sign says the House exit is 2B, which is not only inconsistent with the next sign assembly that says that is exit 6, but also is out of sequence with I-395's other exit numbers. This is just the beginning of some daffy new exit numbers.
EDIT: But the corresponding House exit on in the other direction on I-395, coming out of the Third Street Tunnel, is now numbered 2B as well. (I didn't notice any other exit number changes, yet, in either direction of I-395 from the tunnel to New York Ave., though I might've missed one due to sun glare.)

This next sign assembly, photographed from the westbound I-395 exit to 6th Street NW, shows I-695 straight ahead, and that I-695 will take you to both I-295 and DC 295. But the exit is identified as exit 2A. This is out of sequence with I-395's other exit numbers, which eastbound are 1, 2, 3, 4, and 6 (plus others in the Third Street Tunnel). The logical number for the I-695 left exit is 7, and I don't understand why DDOT didn't go with that.
The exit sign for South Capitol Street shows that as exit 1A, which makes sense since it is the westernmost exit on I-695.

Similarly, this set of exit signs on westbound I-395, just after leaving the Third Street Tunnel, shows the left exit to I-695 as exit 2A. IIRC, the old sign for the left exit used the more sensible exit 7 numbering.
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There are also new posted exit numbers for I-695. These all look reasonable.
Eastbound:
1A -- South Capitol Street
1B -- 6th Street SE
1C -- 11th Street SE (new exit, which apparently will be the tie-in to the bypassed old segment of the Southeast Freeway once it's rebuilt as a boulevard)
2A -- I-295 southbound
2B -- DC 295 northbound
Westbound:
EDIT: 1C -- left exit for Martin Luther King Ave. SE, just after the I-295/I-695 split
2 -- M Street SE
unnumbered -- I-395 north and south (this might be fixed later, after ongoing reconstruction on WB I-695 is done).